Ma femme me quitte (1996)
Directed by Didier Kaminka

Film Synopsis

Joanna Martin and Samuel Bosquier have been together for fifteen years.  Although they are both committed to their careers - he is a lawyer, she a television journalist - they are inseparable and hope soon to settle down and start a family.  Then, one day, a gesture of good will threatens to drive them apart.  It begins when Joanna agrees to write a Dear John letter for the caretaker of the building where she lives.  The latter has had enough of being abused by her violent husband, but cannot write the letter as she has a broken arm.  When Samuel comes across a draft of the letter in his partner's handwriting he draws the obvious conclusion: she has made up her mind to leave him.  In fact, Joanna is away in Mali, making a report on marriages of convenience.  In the interests of her work, Joanna has to marry a Hungarian émigré, Pavel Kovacks...